EP0009035B1 - selective hydrogenation of cyclopentadiene to form cyclopentene - Google Patents

selective hydrogenation of cyclopentadiene to form cyclopentene Download PDF

Info

Publication number
EP0009035B1
EP0009035B1 EP79930020A EP79930020A EP0009035B1 EP 0009035 B1 EP0009035 B1 EP 0009035B1 EP 79930020 A EP79930020 A EP 79930020A EP 79930020 A EP79930020 A EP 79930020A EP 0009035 B1 EP0009035 B1 EP 0009035B1
Authority
EP
European Patent Office
Prior art keywords
alkyl
compound
carbon atoms
hydrogen
cyclopentadiene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79930020A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0009035A1 (en
Inventor
Henry Robert Menapace
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of EP0009035A1 publication Critical patent/EP0009035A1/en
Application granted granted Critical
Publication of EP0009035B1 publication Critical patent/EP0009035B1/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0235Nitrogen containing compounds
    • B01J31/0237Amines
    • B01J31/0238Amines with a primary amino group
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0201Oxygen-containing compounds
    • B01J31/0211Oxygen-containing compounds with a metal-oxygen link
    • B01J31/0214Aryloxylates, e.g. phenolates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/04Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/12Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
    • B01J31/14Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
    • B01J31/143Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron of aluminium
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/02Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
    • C07C5/03Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of non-aromatic carbon-to-carbon double bonds
    • C07C5/05Partial hydrogenation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2231/00Catalytic reactions performed with catalysts classified in B01J31/00
    • B01J2231/60Reduction reactions, e.g. hydrogenation
    • B01J2231/64Reductions in general of organic substrates, e.g. hydride reductions or hydrogenations
    • B01J2231/641Hydrogenation of organic substrates, i.e. H2 or H-transfer hydrogenations, e.g. Fischer-Tropsch processes
    • B01J2231/645Hydrogenation of organic substrates, i.e. H2 or H-transfer hydrogenations, e.g. Fischer-Tropsch processes of C=C or C-C triple bonds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84Metals of the iron group
    • B01J2531/847Nickel
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/24Nitrogen compounds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2531/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • C07C2531/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2531/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • C07C2531/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • C07C2531/04Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2531/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • C07C2531/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • C07C2531/12Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2531/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • C07C2531/02Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • C07C2531/12Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
    • C07C2531/14Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/06Systems containing only non-condensed rings with a five-membered ring
    • C07C2601/10Systems containing only non-condensed rings with a five-membered ring the ring being unsaturated

Definitions

  • This invention is directed to the selective hydrogenation of dienes to monoolefins, particularly to the selective hydrogenation of cyclopentadiene to cyclopentene. More specifically, it is directed to a process wherein cyclopentene is prepared which comprises selectively hydrogenating cyclopentadiene in a liquid phase by contacting cyclopentadiene with hydrogen in the presence of a hydrogenation catalyst comprising (1) a soluble nickel compound, (2) an aluminum trialkyl compound or a lithium alkyl compound, and (3) at least one cocatalyst compound selected from the group consisting of H 2 0; NH 3 ; ROH where R is an alkyl or a hydrogenated alkyl radical containing from 1 to 20 carbon atoms; where R 1 , R 2 and R 3 may be hydrogen, or an alkyl radical containing from 1 to 6 carbon atoms; where R 1 , R 2 and R 3 may be hydrogen or halogen, or an alkyl radical containing from 1 to 6 carbon atoms; R 1 OR 2 where
  • cyclopentadiene At the present time, substantial amounts of cyclopentadiene, usually as dicyclopentadiene, are available as a byproduct from the steam cracking of naphtha to produce primarily ethylene.
  • Cyclopentene has been found to be useful as a monomer for the formation of general purpose elastomers by ring opening polymerization of cyclopentene. Therefore, it is desirable to convert a portion of the excess cyclopentadiene available into a more valuable raw material, such as cyclopentene.
  • a method of selectively hydrogenating cyclopentadiene to form cyclopentene which comprises contacting cyclopentadiene with hydrogen in the presence of a catalyst which is a mixture of a nickel alkyl compound, such as nickel salts of carboxylic acids, nickel acetylacetonate, nickel salicaldehyde, bis(salicaldehyde), nickel, ethylene diamine, nickel, bis(x-furyl dioxime)nickel, and nickel tetracarbonyl.
  • a nickel alkyl compound such as nickel salts of carboxylic acids, nickel acetylacetonate, nickel salicaldehyde, bis(salicaldehyde), nickel, ethylene diamine, nickel, bis(x-furyl dioxime)nickel, and nickel tetracarbonyl.
  • the process of the present invention differs from all of this prior art in that it employs a third cocatalyst in certain amounts relative to the aluminium and nickel compound.
  • the cyclopentadiene employed in the formation of cyclopentene by hydrogenation is usually obtained by depolymerizing or cracking dicyclopentadiene.
  • the depolymerization of dicyclopentadiene is accomplished by heating the dimer at a temperature above 150°C. under atmospheric pressure in a conventional cracking apparatus.
  • the depolymerized material should be hydrogenated without substantial delay because it is also known that redimerization will occur upon standing.
  • cyclopentadiene can be selectively hydrogenated to cyclopentene, in the liquid phase by contacting cyclopentadiene with hydrogen in the presence of a catalyst comprising
  • the temperature at which the cyclopentadiene may be hydrogenated in accordance with the present invention may range from about 0°C. to about 250°C. with about 20 to about 100°C. being more preferred and 30 to 80°C. being most preferred.
  • inert, aromatic and aliphatic solvents may be employed as the reaction medium. Almost any aromatic or aliphatic hydrocarbon may be employed so long as the catalyst components are soluble in said solvent and the cyclopentadiene reactant is, likewise, soluble in said solvent.
  • aliphatic solvents are heptane, octane, cyclopentane and the like.
  • Typical examples of such inert aromatic solvents are benzene, toluene, xylene, and the like.
  • the molar ratio of the catalyst components employed in the process of this invention may vary widely.
  • the molar ratio of the particular cocatalyst compound to the soluble nickel compound may vary from about 1/1 to about 4/1 with a molar ratio of cocatalyst compound/Ni from 1.5/1 to 3/1 being more preferred.
  • the molar ratio of the organoaluminum compound or the lithium alkyl compound to the soluble nickel compound (Al/Ni) (Li/Ni) may vary from about 6/1 to about 12/1, with about 7/1 to 9/1 being preferred.
  • the amount of catalyst to the cyclopentadiene hydrogenated has not been found to be critical and may vary widely from a cyclopentadiene/nickel molar ratio of about 100/1 to about 20,000/1 and has been proved to be satisfactory in the performance of the invention. On the other hand, better reaction rates and more economical operating conditions would be to employ a cyclopentadiene/Ni mole ratio of from 5000/1 to about 15,000/1.
  • the first catalyst component of the catalyst system of this invention is a soluble nickel compound.
  • soluble is meant soluble in inert solvents.
  • organonickel compounds are nickel benzoate, nickel acetate, nickel naphthenate, nickel octanoate, bis(a-furyl dioxime) nickel, nickel palmitate, nickel stearate, nickel acetylacetonate, nickel salicaldehyde, bis(cyclopentadiene) nickel, bis(salicylaldehyde)ethylene diimine nickel, cyclo-pentadienyl-nickel, nitrosyl, bis(n-allyl nickel trifluoroacetate), and nickel tetracarbonyl.
  • the preferred component containing nickel is a nickel salt of a carboxylic acid or an organic complex compound of nickel. The most preferred are 2-ethyl hexanoate, neo-de
  • the second or (2) component is an organoaluminum compound.
  • organoaluminum compound is meant any organoaluminum compound responding to the formula: in which R, is selected from the group consisting of alkyl (including cycloalkyl), aryl, alkaryl, arylalkyl, alkoxy and hydrogen; R z and R 3 being selected from the group of alkyl (including cycloalkyl), aryl, alkaryl, and arylalkyl.
  • diethylaluminum hydride di-n-propylaluminum hydride, di-n-butylaluminum hydride, diisobutylaluminum hydride, diphenylaluminum hydride, di-p-tolylaluminum hydride, dibenzylaluminum hydride, phenyl ethylaluminum hydride, phenyl-n-propylaluminum hydride, p-tolyl ethylaluminum hydride, p-tolyl n-propylaluminum hydride, p-tolyl isopropylaluminum hydride, benzyl ethylaluminum hydride, benzyl n-propylaluminum hydride, and benzyl isopropylaluminum hydride and other organoaluminum hydrides.
  • diethylaluminum ethoxide, diisobutylaluminum ethoxide, and dipropylaluminum methoxide are also included.
  • the second component is also a lithium alkyl compound.
  • the term lithium alkyl compound is meant to mean that the organo lithium compound corresponds to the formula R-Li in which R is a monovalent hydrocarbon radical with 1 to 20 carbon atoms, especially n-butyllithium, secondary butyllithium, hexyllithium and methyllithium are representative thereof. Of these, butyllithium is the preferred lithium compound.
  • the third catalyst (3) component has been referred to as a cocatalyst compound which may be selected from certain oxygen or nitrogen containing compounds.
  • a cocatalyst compound which may be selected from certain oxygen or nitrogen containing compounds.
  • water H 2 O
  • Anhydrous ammonia NH 3
  • ammonia in mixture with water is useful.
  • commercial ammonium hydroxide NH 4 0H
  • the third catalyst component may also be chosen from certain oxygen containing compounds such as those defined by a formula ROH wherein R is an alkyl or halogenated alkyl radical containing from 1 to 20 carbon atoms.
  • ROH an alkyl or halogenated alkyl radical containing from 1 to 20 carbon atoms.
  • Representative examples of this class of compounds are the simple alcohols such as methanol, ethanol, butanol, hexanol, chloroethanol and the like.
  • the third catalyst component may also be chosen from those compounds represented by the formula wherein R ' , R 2 and R 3 may be hydrogen or an alkyl radical containing from 1 to 6 carbon atoms.
  • Representative examples of the cocatalysts responding to this formula are phenol, 4-methyl phenol, 3-methyl phenol, 4-butyl phenol and the like.
  • the third catalyst component may also be represented by the compounds responding to the formula wherein R 1 , R 2 and R 3 may be hydrogen, halogen or an alkyl radical containing from 1 to 6 carbon atoms.
  • Representative examples of such materials responding to this formula are aniline, 2-methyl aniline, 4-methyl aniline, 3-chloroaniline, 4-butyl aniline, 3,4-dimethylaniline, 3,4-dichloroaniline and the like.
  • R,-O-R z Another class of compounds which may be employed as cocatalysts in the practice of this invention are those ethers represented by the formula R,-O-R z wherein R, and R z may be the same or different alkyl radicals containing from 1 to 6 carbon atoms. Representative examples of such compounds would be methyl ethyl ether, diethyl ether, dimethyl ether, dibutyl ether and the like.
  • Still another class of cocatalysts which may be employed in this invention are the compounds responding to the formula wherein R i may be an alkyl or aromatic radical of from 1 to 8 carbon atoms and R 2 may be hydrogen or an alkyl or aromatic radical containing 1 to 8 carbon atoms.
  • R i may be an alkyl or aromatic radical of from 1 to 8 carbon atoms
  • R 2 may be hydrogen or an alkyl or aromatic radical containing 1 to 8 carbon atoms.
  • Representative of such compounds are acetaldehyde, acetone, methyl ethyl ketone, acetophenone, 3-pentanone, benzaldehyde and the like.
  • a preferred group of cocatalyst compounds are those such as water, ammonia, alcohols and phenols or mixtures thereof. Of particular interest are mixtures of water and ammonia.
  • the catalyst components employed in the hydrogenation catalyst of the invention are soluble in the cyclopentadiene reactant and are soluble in the cyclopentene product.
  • the reactant cyclopentadiene and the product cyclopentene and the catalyst used in this invention are also soluble in a variety of inert solvents, either aromatic or aliphatic, such as pentane, cyclopentane, n-octane, toluene, benzene and the like.
  • a solvent may be used. If a solvent is used, the cyclopentadiene/solvent volume ratio may vary from 1/1 to 200/1.
  • a series of different catalysts were prepared in which a typical procedure using 1.30 millimoles (mmol) of the particular cocatalyst compound were added to 0.65 mmol of nickel octanoate as a 0.1 molar solution in toluene to a series of dry 4-oz bottles under nitrogen. After mixing the cocatalyst and the nickel octanoate for 5 minutes at room temperature, 4.55 mmol of triethylaluminum as a 2 molar solution in toluene were added under nitrogen and the mixture stirred for at least two additional minutes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
EP79930020A 1978-08-30 1979-08-27 selective hydrogenation of cyclopentadiene to form cyclopentene Expired EP0009035B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/938,159 US4204081A (en) 1978-08-30 1978-08-30 Selective hydrogenation of cyclopentadiene to form cyclopentene
US938159 2001-08-23

Publications (2)

Publication Number Publication Date
EP0009035A1 EP0009035A1 (en) 1980-03-19
EP0009035B1 true EP0009035B1 (en) 1983-03-09

Family

ID=25470993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79930020A Expired EP0009035B1 (en) 1978-08-30 1979-08-27 selective hydrogenation of cyclopentadiene to form cyclopentene

Country Status (7)

Country Link
US (1) US4204081A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0009035B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5535083A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR7905424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1115735A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2964993D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA794016B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570025A (en) * 1985-06-14 1986-02-11 Phillips Petroleum Company Preparation of alkenes and cycloalkenes
JP2718059B2 (ja) * 1988-04-28 1998-02-25 日本合成ゴム株式会社 重合体の水素添加方法および触媒
JPH0236223A (ja) * 1988-07-27 1990-02-06 Nippon Oil Co Ltd 淡色な樹脂の製造方法
JP2969771B2 (ja) * 1989-12-22 1999-11-02 ジェイエスアール株式会社 オレフィン性不飽和重合体の水素添加方法および水素添加用触媒組成物
FR2736562B1 (fr) * 1995-07-11 1997-09-19 Inst Francais Du Petrole Nouvelle composition catalytique pour catalyse biphasique, en particulier a base de complexes du nickel et procede pour l'oligomerisation des olefines
CN111085268B (zh) * 2018-10-24 2023-07-21 中国石油化工股份有限公司 聚苯乙烯加氢制聚环己烷基乙烯的加氢催化剂及制备方法和加氢方法
CN111085269B (zh) * 2018-10-24 2023-03-14 中国石油化工股份有限公司 环戊二烯加氢制环戊烯加氢催化剂及其制备方法和加氢方法
CN111085272B (zh) * 2018-10-24 2023-05-12 中国石油化工股份有限公司 聚苯乙烯加氢制聚环己烷基乙烯的加氢催化剂及制备方法和加氢方法
CN111085271B (zh) * 2018-10-24 2023-04-11 中国石油化工股份有限公司 制备氢化苯乙烯-共轭二烯共聚物的加氢催化剂及制备方法、加氢方法和氢化共聚物

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022359A (en) * 1959-04-07 1962-02-20 Exxon Research Engineering Co Selective hydrogenation of cyclododecatriene to cyclododecene
GB1046780A (en) * 1963-04-18 1966-10-26 Geigy Co Ltd Improvements in or relating to selective hydrogenation
GB1369676A (en) * 1971-02-19 1974-10-09 Int Synthetic Rubber Cyclopentene preparation
US3937745A (en) * 1974-08-29 1976-02-10 The Goodyear Tire & Rubber Company Selective hydrogenation of cyclopentadiene
IT1038403B (it) * 1975-05-23 1979-11-20 Snam Progetti Procedimento di idrogenazione selettiva in fase gassosa di composti plurinsaturi

Also Published As

Publication number Publication date
ZA794016B (en) 1980-11-26
JPS5535083A (en) 1980-03-11
EP0009035A1 (en) 1980-03-19
US4204081A (en) 1980-05-20
DE2964993D1 (en) 1983-04-14
CA1115735A (en) 1982-01-05
JPS621374B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-01-13
BR7905424A (pt) 1980-05-20

Similar Documents

Publication Publication Date Title
KR100284063B1 (ko) 말단 이중 결합을 갖는 올레핀의 제조 방법
ZA200502081B (en) Catalyst systems for ethylene oligomerisation to linear alpha olefins.
EP0009035B1 (en) selective hydrogenation of cyclopentadiene to form cyclopentene
US20090143551A1 (en) Nickel-based catalysts for preparing high cis 1,4-polydienes
US20190210011A1 (en) Catalyst composition and process for oligomerization of ethylene
EP1368384B1 (en) Manufacture of conjugated diene polymers using an iron-based catalyst composition
EP0331117B1 (en) Dimetrization of lower alpha-olefins
US4017526A (en) Metal complexes
US4501866A (en) Continuous method for preparing high cis-1,4 polybutadiene
US4188348A (en) Hydrogenation of cyclopentadiene to form cyclopentene
EP0446007B1 (en) Process for preparing transition metal cyclopentadienyl carbonyl compounds
EP0438288A2 (en) Method of synthesising a selective olefin hydrogenation catalyst
US4621158A (en) Method for making amines
US4983695A (en) Molecular weight control of polybutadiene
CN113651675B (zh) 一种制备异植物醇的方法
US4020118A (en) Process for producing isoprene trimers
JP5517408B2 (ja) トリメチルシクロドデカトリエンの製造法
US3256253A (en) Process for the production of organic tin compounds
US3946087A (en) New process for hydrogenating ketones
JPH07275713A (ja) 有機液相に可溶性の水素化触媒の調製方法
US7199075B1 (en) Organometallic complexes that comprise bidentate chelating ligands that combine a nitrogen-containing heterocyclic compound with an alcohol and their use for catalyzing the oligomerization of olefins
JP3324163B2 (ja) α−オレフィンの低重合方法
US3848015A (en) Process for the production of dimers and trimers of conjugated dienes
EP2641909A1 (en) Transition metal P-N complexes as polymerization catalysts
US4107198A (en) Catalytic codimerization of norbornadiene with acrylonitrile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

ET Fr: translation filed
REF Corresponds to:

Ref document number: 2964993

Country of ref document: DE

Date of ref document: 19830414

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19890731

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19890821

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19890830

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890831

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19891115

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19900827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19900831

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

REG Reference to a national code

Ref country code: FR

Ref legal event code: CL

BERE Be: lapsed

Owner name: THE GOODYEAR TIRE & RUBBER CY

Effective date: 19900831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910301

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT